87655133 has 4 divisors (see below), whose sum is σ = 87758748. Its totient is φ = 87551520.

The previous prime is 87655123. The next prime is 87655153. The reversal of 87655133 is 33155678.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 49252324 + 38402809 = 7018^2 + 6197^2 .

It is a cyclic number.

It is not a de Polignac number, because 87655133 - 2¹⁰ = 87654109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87655103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50528 + ... + 52233.

It is an arithmetic number, because the mean of its divisors is an integer number (21939687).

Almost surely, 2^87655133 is an apocalyptic number.

It is an amenable number.

87655133 is a deficient number, since it is larger than the sum of its proper divisors (103615).

87655133 is a wasteful number, since it uses less digits than its factorization.

87655133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103614.

The product of its digits is 75600, while the sum is 38.

The square root of 87655133 is about 9362.4320024233. The cubic root of 87655133 is about 444.2142139908.

The spelling of 87655133 in words is "eighty-seven million, six hundred fifty-five thousand, one hundred thirty-three".